with the main battery removed & no power supply connected, open the little viewing screen on the side of the camera
and right there where the buttons are there is another
door for a button cell battery, remove the battery and it'll reset the camera to factory default
settings.

with the main battery removed & no power supply connected, open the little viewing screen on the side of the camera
and right there where the buttons are there is another
door for a button cell battery, remove the battery and it'll reset the camera to factory default
settings.